# Calculate thickness of thin muscle

**URL:** <https://discourse.slicer.org/t/calculate-thickness-of-thin-muscle/13444>\
**Category:** Support\
**Created:** [September 11, 2020, 5:42pm UTC](https://discourse.slicer.org/t/calculate-thickness-of-thin-muscle/13444 "2020-09-11T17:42:43Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![lmach](https://avatars.discourse-cdn.com/v4/letter/l/ecae2f/32.png) [@lmach](https://discourse.slicer.org/u/lmach)\
**Post date:** [September 20, 2020, 4:08pm UTC](https://discourse.slicer.org/t/calculate-thickness-of-thin-muscle/13444/7 "2020-09-20T16:08:54Z")

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![thickness_all3steps](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/a/fa42ad9e73a2e539bc2cc575a90ff27ad4293559.png)

Hi, I have previously posted a question about how to measure the thickness ([Calculate thickness of thin muscle](https://discourse.slicer.org/t/calculate-thickness-of-thin-muscle/13444)) but did not come to any solution. I have followed this workflow: [How to analyze the thickness of the model - #2 by lassoan](https://discourse.slicer.org/t/how-to-analyze-the-thickness-of-the-model/2735/2) and I got the result as in the attached image. It seems like the inner and outer boundary are colored, but where is the medial surface? I need it so that I can measure the thickness (distance between inner and outer boundary) of this segment. After following the workflow, what does the colors indicate?

Thanks in advance!

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